CVE-2025-49577 – starcitizentools/citizen-skin

Package

Manager: composer
Name: starcitizentools/citizen-skin
Vulnerable Version: >=2.13.0 <3.3.1

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00039 pctl0.10926

Details

starcitizentools/citizen-skin allows stored XSS in preference menu heading messages ### Summary Various preferences messages are inserted into raw HTML, allowing anybody who can edit those messages to insert arbitrary HTML into the DOM. ### Details The `innerHtml` of the label div is set to the `textContent` of the label, essentially unsanitizing the system messages: https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/407052e7069bdeae927d6f1a2a1c9a45b473bf9a/resources/skins.citizen.preferences/addPortlet.polyfill.js#L18 ### PoC 1. Edit `citizen-feature-custom-font-size-name` (or any other message displayed in a heading in the preferences menu) to `<img src="" onerror="alert('citizen-feature-custom-font-size-name')">` (script tags don't work here due to the way the HTML is inserted) 2. Open the preferences menu ![image](https://github.com/user-attachments/assets/b75f100d-09cc-443c-b635-e9d6ab48d133)

Metadata

Created: 2025-06-13T14:08:12Z
Modified: 2025-06-13T14:08:12Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-jwr7-992g-68mh/GHSA-jwr7-992g-68mh.json
CWE IDs: ["CWE-79"]
Alternative ID: GHSA-jwr7-992g-68mh
Finding: F425
Auto approve: 1